/*
 * Copyright (C) 2017 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#import "TWTRMultiThreadUtil.h"

@implementation TWTRMultiThreadUtil

+ (void)assertMainThread
{
    const BOOL isMainThread = [NSThread isMainThread];

    if (!isMainThread) {
        [TWTRMultiThreadUtil warnForBackgroundThreadUsage];
    }
}

+ (void)warnForBackgroundThreadUsage
{
    NSString *warningMessage = [NSString stringWithFormat:@"TwitterKit must be used only from the main thread. Use from background threads will lead to unexpected behavior and crashes. Set a symbolic breakpoint in +[%@ %@] to debug this.", NSStringFromClass([self class]), NSStringFromSelector(_cmd)];

    NSLog(@"%@", warningMessage);
    NSAssert(NO, @"%@", warningMessage);
}

@end
